matrix-docker

Deploy your own Matrix homeserver with a single Docker Compose file using the Conduit homeserver and Cinny Matrix client with Caddy for SSL termination and reverse proxying.

Prerequisites

• Docker and Docker Compose installed on your server
• Ports 80/tcp and 443/tcp open on your server
• A domain name (e.g., example.com) with DNS records configured
• Directories created for Caddy and Cinny configurations
• Configuration files adjusted to your liking

DNS Configuration

Ensure you have the following DNS records set up for your domain:

• A record for matrix.example.com pointing to your server's IP
• A record for cinny.example.com pointing to your server's IP
• A record for example.com pointing to another Caddy instance serving .well-known (Optional)

Setting Up .well-known (Optional)

For Matrix federation to work correctly, you need to serve a .well-known header on your root domain. This can be done easily with Caddy:

Caddyfile

{
	email email@example.com
}
example.com {
	root * /sites/example.com
	file_server
	header {
		Permissions-Policy interest-cohort=()
		Strict-Transport-Security max-age=31536000;
		X-Content-Type-Options nosniff
		X-Frame-Options DENY
		Referrer-Policy no-referrer-when-downgrade
	}
	header /.well-known/matrix/* Content-Type application/json
	header /.well-known/matrix/* Access-Control-Allow-Origin *
	respond /.well-known/matrix/server `{"m.server": "matrix.example.com:443"}`
	respond /.well-known/matrix/client `{"m.homeserver": {"base_url": "https://matrix.example.com"}}`
}

Test Federation (Optional)

Once you have configured DNS and deployed your Matrix homeserver, test federation via the Matrix Federation Tester: https://federationtester.matrix.org